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N.PETER5, PHDTO-LITHOGRAPHER, WASHINGTON n C SAMUEL M. KING, OF LANCASTER., APENNSYLVANIA Lehm Patent No. 76,469, ma Apta v 7, 186s.

i IMPROVFMENT IN SAWING-MAGHINES.

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To ALL WHoM ir MAY cononnn;

Beit known that I, SAMUEL M. KING, of Lancaster city, county of-Lancaster, and State of Pennsylvania, have invented an Improved Steam Portable Cross-GutSawgand I hereby decla-re the''ollowing to be an exact description thereof, reference being had to the accompanying-tlra'wings, and to the letters of reference marked thereon, making a part of this specification, in whichf- Figure 1 represents a top View ofthe machine."

Figure 2, a side elevation, yand I Figure 3 showing the rear end of the engine-boiler, with. the upright arm and bed-plate of the movable frame hinged to the rear lower end ot' the cylinder-head.

The nature of my invention consists in the construction ofthe cross-piece or b,e(l-plate with its hinge attached to the rear lowler'end of the cylinder-head, the bed-plate being also apart of the upright arm ot the movable frame; also the construction and arrangement of the adjustable-rock-shaft, with 'its regulating upright lever attached to the piston-rod. y A v l A-represents the saw; B, the piston-rod to 1which the saw is attached; C, the steam-cylinder; D, the steam chest; E, the movable frame lthat braces thevsaw; F, the Vreci; and pinion, byvwhich the movable frame is raised and lowered; G, the valve-rod; H, the connecting-armthat connects the valverod with the rock-shaft, that moves the valve-rod back at the same timethat the saw is moved forward. J is the roch-shaft slightly curved from the top of the connecting-arm H, about one-thirdits length, then on a straight line about one-hali` its length, the outer end then bending slightly. downward in an angle, the-end formed into a slot, K, in which the pin L operates. At each end of the slot is a set-screw, M, by which the motion of the rock-shaft is nicely adjusted, so that the stroke of the rock-shaftjis, shortened or lengthenecl, and by reason of the slot K the rockshaft is made to move regularly and smoothly'on the pin L, as the regulating-lever N moves and vbrates bach and forth with the piston-ro l B. The lever N works vertically on an upright frame,'P, that is attached to the guide and support R of the piston-rod B. The movable frame E works on an upright arm, S, in the rear, and rests upon' a horizontal bed-plate, T, located at the rear-,end of the cylinder, and operating on a hinge, V, attached to the lower end of the cylinder-headytr.

What I claim as myinvention, and desire to secure by Letters Patent, is-v l The construction of the rock-shaft J, with its adjustable screws M, and regulating-lever N, as herein described, arid for the purposes set forth; l

SAMLM. KING.

Witnesses:

J. FRANKLIN Bewaar, EDM. F. BROWN; 

